%0 Journal Article %1 Kaim.1984e %A Kaim, Wolfgang. %D 1984 %J Journal of the Chemical Society, Perkin Transactions 2: Physical Organic Chemistry %K ESR ESR;methylquinoxaline ESR;quinoxaline flavosemiquinone ion methyl methylquinoxaline model prepn radical %N 11 %P 1767--1769 %T Flavosemiquinone model systems. Part 2. Methyl-substituted quinoxaline radical ions %X 2,3-Dimethyl-, 6,7-dimethyl-, and 2,3,6,7-tetramethylquinoxaline were reduced in aprotic (THF) and acidic media (DMF-HClO4) to yield the corresponding quinoxaline radical anions and 1,4-dihydroquinoxaline radical cations. Anal. of their ESR spectra was accomplished by computer simulation; a consistent assignment of coupling consts. in quinoxaline radical ions could be made on the basis of the Me substitution pattern. The hyperfine splitting agreed with HMO correlations and may be used to explain the spin distribution in flavosemiquinones. [on SciFinder(R)]

@article{Kaim.1984e, abstract = {2,3-Dimethyl-, 6,7-dimethyl-, and 2,3,6,7-tetramethylquinoxaline were reduced in aprotic (THF) and acidic media (DMF-HClO4) to yield the corresponding quinoxaline radical anions and 1,4-dihydroquinoxaline radical cations. Anal. of their ESR spectra was accomplished by computer simulation; a consistent assignment of coupling consts. in quinoxaline radical ions could be made on the basis of the Me substitution pattern. The hyperfine splitting agreed with HMO correlations and may be used to explain the spin distribution in flavosemiquinones. [on SciFinder(R)]}, added-at = {2022-06-15T11:26:56.000+0200}, author = {Kaim, Wolfgang.}, biburl = {https://puma.ub.uni-stuttgart.de/bibtex/28248b05980c7b7524c5d1d1862b58640/huebleriac}, interhash = {8f12ab64041bf1c23c08869f8e9fd293}, intrahash = {8248b05980c7b7524c5d1d1862b58640}, issn = {0300-9580}, journal = {Journal of the Chemical Society, Perkin Transactions 2: Physical Organic Chemistry}, keywords = {ESR ESR;methylquinoxaline ESR;quinoxaline flavosemiquinone ion methyl methylquinoxaline model prepn radical}, number = 11, pages = {1767--1769}, timestamp = {2022-06-15T09:26:56.000+0200}, title = {Flavosemiquinone model systems. Part 2. Methyl-substituted quinoxaline radical ions}, year = 1984 }